Radiator



D. A. USINA July 28, 1931 RADIATOR Fled July 2o, 1928 Sii;

Patented July 2 8, 1931 j i Y UNITED STATES PATENT OFFICE DOMINGO ANTHONY USINA, OF NUTLEY, NEW JERSEY, .ASSIGNOR,BY MESNE ASSIGN- MENTS, TO MURRAY RADIATOR CORPORATION, A. CORPORATION OF NEW YORK RADIATOR Application filed July 20,

In certain previous applications of Murray and Bennett No. 203,437 and Phelps No. 249,538, there is described a radiator comprising a steam pipe or other heating element and a structure providing an extending surface applied thereto and fastened thereon by certain supplemental fastening devices.

The present invention is directed to a scheme for fastening the parts of such a radiator together and is applicable also to radiators of different designs. The accompanying drawings illustrate an embodiment of the invention.

Fig. 1 is a side elevation of an end of the radiator.

Fig. 2 is a cross-section on the line 2 2 of Fig. 1. l

Fig. 3 is a vertical cross-section on the line 3 3 of Fig. i.

Fig. 4 is an enlargement of a detail.

Fig. 1 illustrates the application to a steam pipe 1 of an extended surface structure comprising metal corrugated sheets to form laterally extending fins 2 which are slightly oblique, connected at their outer edges by longitudinal portions 3, and at their inner edges by longitudinal portions 4 which are bent outwardly at intervals to form recesses 5 embracing the pipe 1 between them. The pipe and the corrugated plates are preferably of copper or aluminum or other metals or alloys of comparatively high heat conductivity.

According to the previous applications v above cited, the attachment of the corrugated structure to the pipe is effected by means of straps of steel or other ferrous metal which embrace the recessed portions 5 surrounding the pipe and are welded together above and below the pipe. These welds may be effected directly through the imperforate sheet metal or through the holes therein. In the production of such radiators the holding of the steel straps in assembled position befl fore the welding operation requires special expedients if the work is to be done rapidly in automatic machines. My present invention avoids this diiiiculty and has certain other advantages in the direction of simplica- 50 tion.

1928. Serial N0. 294,191.

For fastening devices I employ rods 6 eX- tending longitudinally and locked against the outer faces of the inner portions 4 of the corrugated plates just above and below the pipe 1. rIhe registering rods at opposite sides are then welded to each other as shown in Fig. 3 by a connecting portion 8 of metal eX- tending through openings in the plates 4 in the manner described in detail in the above Phelps application. Or they may be welded directly through the imperforate plates 4 as in the above Murray and Bennett application. Or in fact, they may be united by various other fastening means which will clamp the plates 4 closely into engagement with the pipe so as to provide andA maintain a good heat conducting joint. i Such a good contact is important particularly in this type of radiator where the corrugations provide vertical flues closed at the sides and open at the top and bottom and acting like chimneys to maintain a rapid circulation of air and to -tale away the heat very rapidly so that it must be in turn supplied very ra idly from the steam pipe to the extended sur aces of the corrugated structure.

The holes in the fins 2 through which the rods 6 eXtend'may be punched out to fit the rods, either removing the metal or bending it back to form tongues 7 (Fig. 4) leaving 'openings 8 though which the rods 6 pass.

y The rods preferably extend the full length of the structure, though shorterV lengths may be used such yfor example, as separate short Vrods for each joint.

In manufacturing the radiator the parts willobe assembled with the sheets embracing the pipe and rods 6 through the holes in the sheet metal and then held in the correct posi- The rods have an addition for welding. tional advantage of strengthening the corrugated structure during the welding operation. Also in the finished radiator, the rods which are preferably of steel, serve to give longitudinal stiffness and to savel bending strains on the comparatively soft copper of the pipe and the outer sheets. y

Various other modifications may be made by those skilled in the art without depart-y vj ing from the invention as defined in the following claims:

What I claim is:

1. A radiator including in combination a heating element, an extended heat radiating surface structure in two parts applied to opposite sides of the heating element and means for holding the two parts together comprising longitudinally extending rods applied to the outer faces thereofand welded to each other through sai-d parts.

2. A radiator including in Combination a heating element, an extended heat radiating surface structure in two parts applied to 0pposite sides of the heating element and means for holding the two parts together comprising longitudinally extending rods adapted to' be held in place by openings in said structure' and applied to the outer faces thereof and welded to each other through said parts.

3.v A radiator includingv in combination a heating element, an extended heat radiating surfacey structure in two corrugated sheets applied to opposite sides of the heating element and means for holding said sheets t0- gether comprising longitudinally extending rods passing through openings therein applied to the outer faces thereof and' united to each other through said sheets.

4f A radiator for heating the air of a room including in combination a horizontally extending heating elfement and an extended heat radiating surface structure applied thereto comprising in-ner longitudinally extending portions engaging the heating element at intervals in its length and transversely extending portions forming between them vertical. passages for causing an induced draft of the heated air Yupwardy through the radiator and devices for secu-rin@ said parts together7 said securing devices extending continuously over and engaging a number of said inner portions.-

.A radiator for heating the air of a room including in combination. a horizontally extending heating element and an extended heat radiating surface structure applied thereto comprising inner longitudinally extending portions which embrace the heating element at opposite sides and transversely extending portions forming between them vertical passages for causing an induced draft of the heated air upward through the radiator and devices for`- securing said parts together, said securing devices engaging the inner portions of the extended surface structure at points beyond the heating element and extending over a number of said inner portions.

In witness whereof, I have hereunto signed my name. Y

D. ANTHONY USINA.. 

